program app does nothing except open empty tabs in browser one after another - and it seems to take forever doing even that - and in the end it leaves you with a blank page from some hack site called Usual Deals!
(nor does the 'how to' link even work for the tutorial video)

It's Dead!
Used to be a great extension but the webpage is dead, extension is also dead because it used the webpage.
Don't bother anymore!

actually a redirect for 4k download apps

adds a button to the upper right section of firefox not youtube and runs in the back ground constantly but does nothing when clicked on and won't download MP3s

Will download eines Programms :(((

clicked on download link on YT video, took me to a different website (4K Download). Nope. Removed.

es bueno

Najlepszy konwerter filmów z yt, szkoda że nie działa :C nigdy cię nie zapomnę simple youtube converter, byłeś dobrym kompanem przy zgrywaniu filmów T>>T

funktioniert seit einiger Zeit nicht mehr, Konvertierungsserver scheint defekt zu sein, zeigt nur Debian-Standardwelcome.